Ventilator



March 16 1926. 1,577,293

J. OBRIEN VBNTILATOR Filed Feb. 18, 1924 2 Sheets-Sheet 1 ATTORNEYPatented Mar. 16, 1926.

UNITED STATES PATENT OFFICE.

JOHN OBRIEN, OF NEW WATERFORD, CAPE BRETON, NOVA SCO'IIA, CANADA-VENTILATOR.

Application filed February 18, 1924. Serial No. 693,695

To all whom'it may concern:

Be it known that I, JOHN OBRIEN, a

" subject of the King of Great Britain, residing at New I'Vaterford,Cape Breton, in the Province of Nova Scotia and Dominion of Canada, haveinvented new and useful Improvements in Ventilators, of which thefollowing is a specification.

This invention relates to a ventilator for a window or the like, thegeneral object of the invention being to provide means adapted to beplaced under the sash of a window with the sash in partly raisedposition so as to permit air to enter a room while keeping out rain andsnow.

Another object of the invention is to permit the device to be adjustedto suit different sizes of windows.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully. described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a View showing the invention in use.

Figure 2 is an enlarged view of the device itself.

Figure 3 is a section on line 3+3 of Figure 2.

Figures 4 and 5 are detail views.

In these views, 1 indicates the frame of the window, 2 the lower sashthereof and A indicates the ventilating device which is placed under thesash and rests upon the sill of the frame. This device consists of thetwo upright pieces 3, the ends of which are shaped, as shown at 4:, toengage the bottom of the sash and the sill. Each piece and are spacedapart to permit air to enter 7 between them. Each shutter is composed-ofa ma or portion and a minor portion 7 which overlaps one end of themajor portion and these two portions are slidably connected together bythev bent strips 8, which form guideways for receiving the edges of theportions. Thus the length of the device can be adjusted to suitdifferent sizes of windows. Clips 9 connect the shutters with theuprights and I prefer to make the shutters of wedge-shape in crosssection, as shown at 10. i

From the foregoing it will be seen that I have provided a simple devicefor permitting a room to be ventilated while keeping out the elements.The device can be adjusted to suit different sizes of windows.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent. I desire it tobe understood that I may make changes in the construction and in thecombination and arrangement of the several parts, provided that suchchanges fall within the scope of the appended claim.

What I claim is A ventilating device comprising a pair of upright pieceshaving their ends formed to fit the bottom of a sash and a sill of awindow, the inner faces of the uprights having inclined grooves therein,shutters having their ends engaging the grooves, each shutter beingcomposed of two wedge-shaped parts withtheir inner ends overlapping eachother and bent strips on one part of each shutter forming guideways forthe other part and clips for fastening the outer ends of the shutters tothe uprights.

In testimony whereof I aflix my signature.

JOHN OBRIEU.

